Products > Test Equipment
Upgrading the HP/Agilent 8714C from green CRT to color LCD
<< < (5/10) > >>
AF6LJ:
This is very Cool, looking forward to more pictures and info.
 :-+ :-+
TheSteve:
Yes, more info would be great. A cheaper and easier mod is anyways welcomed. It would be nice to ditch the VGA interface.
andy2000:
Here are some more pictures of the project.  I'll post a list of part numbers for the ICs soon.  They were standard parts from Mouser.  I already had miscellaneous parts like caps and resistors on hand. 

U1025 is used for brightness control, but I didn't install it since I assume the firmware lacks support for that feature. 

I simply grounded the unused LSBs of the LCD. 

I mounted the LCD to a piece of Plexiglas which I attached to the CRT brackets on standoffs.  I used a router table to shave off the CRT bezel.
andy2000:
Here's a list of the part number I ordered. 

U1008 -- LX8385B-33CDD -- 3.3v regulator
Q1001 -- FDS6679 -- P channel MOSFET
R1025 -- SOMC160333R0GEA  -- resistor array, 33 ohms
R1026 -- SOMC160333R0GEA  -- resistor array, 33 ohms
U1012 -- SN74LVT125D
U1009 -- SN74LS123DR
U1010 -- 74LVT574WMX
U1011 -- 74LVT574WMX
J1020 --  A3E-50PA-2DSA(71)
KrudyZ:
I recently bought a nice copy of the HP 8714ET and have just received my LCD from Shenzhen.
https://www.ebay.com/itm/VGA-LCD-Controller-Board-RT2270C-With-8-4-AA084VC03-640x480-LCD-Screen/181965840286?hash=item2a5e025f9e:g:1oUAAOSwbtVZV2uh
I paid $90 shipped. It arrived within 10 days and was well packaged, so I had a good experience with this seller.
I chose to go the analog VGA route as it seems to require fewer modifications to the analyzer.
Here is a picture of the LCD kit plugged into the external VGA port and powered from a 12 V lab supply (it draws about 1 A).
This is using two fluorescent backlights. I'm still waiting on the LED strips to come in to update the backlight and complete the mod.
Rudy
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod